/Engine/Plugins/Runtime/GameplayAbilities/Source/GameplayAbilities/Public/AbilitySystemComponent.h
Dynamically update multiple set-by-caller magnitudes for an active gameplay effect
[UFUNCTION](Programming/UnrealArchitecture/Reference/Functions)(BlueprintCallable, BlueprintAuthorityOnly, Category=GameplayEffects) virtual void UpdateActiveGameplayEffectSetByCallerMagnitudes ( [FActiveGameplayEffectHandle](API\Plugins\GameplayAbilities\FActiveGameplayEffectHandle) ActiveHandle, const [TMap](API\Runtime\Core\Containers\TMap)< [FGameplayTag](API\Runtime\GameplayTags\FGameplayTag), float > & NewSetByCallerValues )